5/16 I.C. COUNTERBORE, STRAIGHT SHANK5/16 I.C. COUNTERBORE, STRAIGHT SHANK 5-616-025, (MFG. #2230-020), 3-13/16" OAL, 3 FLUTES, 3/32" HOLE DIA., 1/8-1/4 RANGE OF PILOT SIZES 3-13/16" Overall Length, 19/64" Straight Shank, 3/32" Pilot Hole Diameter, High Speed Steel, Import. These Interchangeable Pilot Counterbores are a handy tool for putting a counterbore in a odd size hole. They take a large range of different pilots. Just insert the pilot into the pilot hole and tighten down the set screw. Pilots are carbon steel and if your size is not available, just turn, or grind it to your desired diameter. They are available several different styles, imported, USA Made or Carbide Tipped. Call your Salesperson for details!
100% Satisfaction Guarantee: At Mansion Tools, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Tools in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.